ATS Diesel Allison 5-Speed Valve Body for 2003-2005 GM 6.6L Duramax - 303-900-4272

About ATS Diesel Performance

ATS Diesel Performance has been a trusted name in diesel performance since 1993, specializing in heavy-duty transmission upgrades, turbochargers, and drivetrain components. Based in Arvada, Colorado, ATS has spent over 30 years developing products for hardworking diesel trucks and high-horsepower builds alike. From their popular built transmissions and TripleLok torque converters to Aurora turbochargers, exhaust manifolds, and other performance upgrades, ATS offers a strong lineup for Cummins, Power Stroke, and Duramax applications, along with select Jeep models.

Whether you're replacing worn-out factory components, improving your truck's towing capabilities, or building something with serious horsepower, ATS Diesel has plenty to offer. Their focus on in-house engineering, manufacturing, and real-world testing has earned them a solid reputation in the diesel community. Here at Elite Race Fab, we're proud to offer ATS Diesel products to customers looking for dependable replacement parts and performance upgrades that are built to handle the job.

• ATS Diesel Products: Most products carry a 1-year or 3-year parts-only warranty with unlimited mileage. Extended coverage up to 5 years is available for eligible products.
• Coverage: Repair or replacement of covered ATS components that fail under normal use, at ATS’s discretion.
• Exclusions: Labor, fluids, taxes, shop supplies and damage to other parts or systems are not covered.

Warranty duration varies by product, and coverage is non-transferable. Contact Elite Race Fab for assistance with a warranty inquiry on your ATS Diesel purchase.